Home / 115,770.56-159,771.95-64,788.39

Finding the Fourth Proportional to 115,770.56, 159,771.95 and 64,788.39

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Solution

The fourth proportional to 115,770.56, 159,771.95 and 64,788.39 is: 89,412.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,770.56 : 159,771.95 = 64,788.39 : x
  2. Step 2: Convert to fraction form
    115,770.56/159,771.95 = 64,788.39/x
  3. Step 3: Cross multiply
    115,770.56x = 159,771.95 × 64,788.39
  4. Step 4: Simplify right side
    115,770.56x = 10,351,367,083.72
  5. Step 5: Solve for x
    x = 10,351,367,083.72/115,770.56
  6. Step 6: Final answer
    x = 89,412.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.